OCXO 8742 / 8743
19 mm high package
Oven Controlled Crystal Oscillator
The 8743
series is an oven controlled crystal
oscillators designed to meet high performances in an
industry standard 19mm high package.
The long term stability
of this SC-cut OCXO allows a
reachable operational period of up to 20 years.
Features
Excellent long term stability
Single oven
SC cut
3rd
overtone crystal resonator
Sine or HC-MOS / TTL-compatible output
Low profile 19mm (0.75 inch) High
Benefits
Selectable long term stability
Easily interfaces with analog or digital circuits
Fits all telecommunications requirements
Small volume CO8 footprint compatible
Applications
Stratum III
Frequency synthesizers, spectrum analysers and
test equipments
Digital switching
Cellular base stations
Outline and Electrical connec tions
All dimensions in mm (inches)
Pin-out connections
1: Vc input
2: Vref Output
3: +Power supply
4: Output
5: GND
6: Oven alarm (optional)
Ordering Information
8743
B
2
S
G
L
10 MHz
Nominal frequency output
Model
3:+12Vdc
Operating temperature range
B: 0°C to 70°C
Frequency stability over temperature range
2:<2E-8 peak to peak
Option Low phase noise
L: Low phase noise
Option aging
G: 2E-10/day
Output signal
S: Sine wave
10.000 MHz
Oscilloquartz S.A./Rue d es Brévards 16/CH-2002 Neuchâtel
Tel.: +41 32 722 55 55 / Fax : +41 32 722 55 56
osa@oscilloquartz.com / www.oscilloquartz.com
Technical
Specifications
Standard / Option
Crystal Oscillator
Standard frequencies
Operating temperature range
Frequency stability (∆ f/f)
∆
Long term stability
(aging after 30 days of continuous operation)
OCXO 8742/8743
Oven Controlled Crystal Oscillator
Standard
SC-cut, 3rd overtone
8.192/10/13/16.384/26 M Hz
A:
-20°C to +70°C
6.480 to 30.000 M Hz
B:
0°C to +70°C
C:
-0°C to +60°C
G:
2x10
-10
/day
H:
1x10
-10
/day
J:
7x10
-11
/day
1:
<1x10
-8
peak to peak
6:
<6x10
-9
peak to peak
< 1x10
-9
< 5x10
-9
< 1x10
-11
>± 0,6 ppm (0 to +10 Volts) / Linearity < 5% / over consult factory
8743 : +12 Volts ± 5%
Over consult factory
Option
5x10
-10
/day
Std : < 2x10
-8
peak to peak
Over temperature range
Versus supply voltage changes
(Vcc ± 5%)
Versus load changes (50Ω ± 10%)
Ω
Short term stability s (t ) (0.2 to 10s)
Allan variance
Electronic frequency control
Power Supply (P)
Input voltage range (DC)
Power consumption
Environment (Not operating)
Storage temperature
Vibration
Shock
Size (L x W x H)
Weight
Outline and electrical connections
Outputs Characteristics
Wave form
Level (Tol.) / Impedance
Phase noise
Harmonics / VH
Spurious / VL
Symmetry
Rise / Fall time (10 / 90%, 45pF)
Internal reference voltage
Pin 2 : Vref out (R
Load
> 20 kW)
Phase noise (BW = 1 Hz)
Frequencies
Standard / Option L
Ed. 04 /Sept.08/ORIS
< 2.0W after warm-up at 25°C / < 7.5W during warm up
-40°C to +100°C
IEC 68-2-6 Test Fc : 10 Hz—500 Hz, 10g
IEC 68-2-27 : Half-sine 50g, 11ms
40.0 x 30.0 x 19.0 mm (1.58”x1.18”x0.75”)
55g
See drawing
S
Sine / 50Ω
> 0dBM
See table
< -25 dBc
< -70 dBc
Not applicable
Not applicable
T
Square
HCMOS
Not applicable
VH: < 4.5 Volts
VL: < 0,5 Volts
40% -60%
< 15ns
U
Square
LV CM OS
Not applicable
VH: > 3.0 Volts
VL: < 0,2 Volts
40% -60%
< 15ns
Std: 7.8 Volts (Source, resistance 1 kΩ)
8.192 MHz / 10 MHz
Standard
1Hz
10 Hz
100 Hz
1’000 Hz
-95 dBc
-125 dBc
-135 dBc
-145 dBc
Option L
-100 dBc
-130 dBc
-140 dBc
-150 dBc
Phase noise
Oscilloquartz SA reserves the right to change all specifications contained herein at any time without prior notice.
www.oscilloquartz.com
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